Q. If the values of regression coefficients are -0.33 and -1.33, then the value of coefficients of correlation between the two variables, is
A) 0.2
B) -0.66
C) 0.4
D) -0.4
Explanation
(b)
Let the regression coefficients be $b_{yx}$=-0.33
And $b_{xy} = - 1.33$
$\therefore\ \ \ r = - \sqrt{b_{yx} \times b_{xy}}$
$= - \sqrt{0.33 \times 1.33}$
$= - \sqrt{0.4389}$
$= - 0.$66
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.